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Direct Synthesis of Thermally Responsive DMA/NIPAM Diblock and DMA/NIPAM/DMA Triblock Copolymers via Aqueous, Room Temperature RAFT Polymerization
Abstract
We report aqueous, room temperature RAFT polymerization of N -isopropylacrylamide (NIPAM) and, subsequently, its block copolymerization utilizing a poly( N, N -dimethylacrylamide) macro-CTA. A series of thermally responsive AB diblock and ABA triblock copolymers have been prepared. These polymers contain hydrophilic N,N -dimethylacrylamide (DMA) A blocks of fixed molecular weight and temperature-responsive NIPAM B blocks of varied chain length. Using a combination of 1 H NMR spectroscopy, T 2 relaxation measurements, dynamic light scattering (DLS), and static light scattering (SLS), we demonstrate that these block copolymers are indeed capable of reversibly forming micelles in response to changes in solution temperature and that the micellar size and transition temperature are dependent on both the NIPAM block length and the polymer architecture (diblock vs triblock).
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Citations
Cited by
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Moad, G., Rizzardo, E., & Thang, S. H. (2008) · Polymer · doi:10.1016/j.polymer.2007.11.020 · Cited by 1,397
Well-Defined Protein−Polymer Conjugates via in Situ RAFT Polymerization
Boyer, C., Bulmus, V., Liu, J., Davis, T. P., Stenzel, M. H., & Barner-Kowollik, C. (2007) · Journal of the American Chemical Society · doi:10.1021/ja070956a · Cited by 411
Self‐Healing Supramolecular Block Copolymers
Hentschel, J., Kushner, A. M., Ziller, J., & Guan, Z. (2012) · Angewandte Chemie International Edition · doi:10.1002/anie.201204840 · Cited by 309
Chang, C., Wei, H., Feng, J., Wang, Z.-C., Wu, X.-J., Wu, D.-Q., Cheng, S.-X., Zhang, X.-Z., & Zhuo, R.-X. (2009) · Macromolecules · doi:10.1021/ma900492v · Cited by 114
Metadata
- Authors
- Convertine, A. J., Lokitz, B. S., Vasileva, Y., Myrick, L. J., Scales, C. W., Lowe, A. B., & McCormick, C. L.
- Venue
- Macromolecules
- Publisher
- American Chemical Society (ACS)
- Published
- 2006-02-08
- Volume
- 39
- Issue
- 5
- Pages
- 1724-1730
- ISSN
- 0024-9297 (ISSN-L)
- 1520-5835
- OpenAlex
- W2068297759
- Cited by
- 341
- References
- 0
- FWCI
- 20.94
- Type
- journal article
- Language
- en
- Open access
- closed
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- Convertine, A. J., Lokitz, B. S., Vasileva, Y., Myrick, L. J., Scales, C. W., Lowe, A. B., & McCormick, C. L. (2006). Direct Synthesis of Thermally Responsive DMA/NIPAM Diblock and DMA/NIPAM/DMA Triblock Copolymers via Aqueous, Room Temperature RAFT Polymerization. Macromolecules. https://doi.org/10.1021/ma0523419
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